From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 13 Feb 2008 13:57:25 +0100

quoted text
> so .. how about the patch below? Note that we already had an "early 
> bootup" special (the rq->idle check), it's now just made explicit via 
> the scheduler_running flag.

I don't see what the problem is.

It is legal to access per-cpu data as early as you like,
it just evaluates to the static copy in the per-cpu section
of the kernel image until the per-cpu areas are setup.

rq->idle should also be zero this early as well, that's
also legal to rely upon

I see nothing illegal in what cpu_clock() is doing, that's
why I fixed the sparc64 per-cpu problem I ran into since
sparc64 was doing the wrong thing when booted on a non-zero
cpu.
--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/